فهرست مطالب alireza emarati

As there is limited research on COVID-19 in children, and reports have indicated low adverse clinical outcomes and mortality rates, our team conducted this study to investigate the clinical outcomes in hospitalized children with COVID-19.  This historical cohort study included children aged 1 month to 18 years with COVID-19. They were admitted to a referral hospital in Yazd, Iran, over a year from February 2020. Demographic information such as age and sex, the length of hospitalization, and the reverse transcription-polymerase chain reaction (PCR) test results were recorded. We also evaluated Patients' outcomes, including admission to the pediatric intensive care unit (PICU), need for mechanical ventilation, and mortality.  Our study included 94 patients, of which 52.1% were female and 29.8% were under one year old. Children aged 1-59 months accounted for more than half of the sample (53.2%). The most common symptoms reported were fever (85.1%), respiratory problems (47.9%), and gastrointestinal symptoms (46.8%). The mean duration of hospital stay was 6.4±5.7 days. About 38.3% of cases required admission to the PICU, and 11.7% needed mechanical ventilation. 75% of deaths occurred in children with confirmed COVID-19 who had an underlying disease. Moreover, respiratory distress at the time of referral was significantly associated with admission to the intensive care unit (P=0.008), requiring mechanical ventilation (P=0.003), and mortality (P=0.02). Our findings suggest that children under one year old, patients with underlying diseases, and those experiencing respiratory distress at the time of referral are high-risk groups and require special attention in care and treatment.

The aim of this meta-analysis was to estimate the prevalence of cesarean section (CS), preterm birth, stillbirth, and low birth weight deliveries (LBWD) in pregnant women with SARS-COV-2 infection.

All relevant studies were searched up to 30 February 2021.

A total of 47 studies with 5970 infected pregnant women were included. There were 1010 CS, 55 stillbirths, 524 preterm birth, and 82 with LBWD. Pooled data showed that the prevalence of CS, preterm birth, stillbirth, and LBWD among women with SARS-COV-2 infection was 29.6% (95% CI 0.081-0.160), 2.1% (95% CI 0.081-0.160), 11.5% (95% CI 0.081-0.160), and 2.1% (95% CI 0.081-0.160), respectively. Stratified analysis revealed that these pregnancy outcomes among Asian women were higher than Caucasians.

Our combined data revealed that the CS prevalence (29.6%) was the highest followed by preterm birth (11.5%), stillbirth (2.1%), and LBWD (2.1%) among women with COVID-19.

Preterm birth is one of the main contributors to newborn mortality, morbidity, and hospitalization in the first year of life globally. To date, several numbers of studies have reported that Angiotensin-Converting enzyme Insertion/Deletion polymorphism (ACE I/D) is linked with preterm birth. But those results are conflicting. Thus, we carried out this meta-analysis to summarize the existing data and evaluated the association.

All eligible studies were collected from PubMed, Scopus, SciELO, MedRxiv, SID, China National Knowledge Infrastructure (CNKI), and Chinese Biomedical Literature Database (CBLD) up to 01 March 2021. The pooled odds ratios (ORs) and 95% confidence interval (CIs) under all five genetic models were calculated using either random-effects or fixed-effects models dependent on study heterogeneity.

A total of five case-control studies with 480 preterm birth cases and 702 healthy subjects were included. Pooled data showed that the ACE I/D polymorphism was significantly associated with increased risk of preterm birth under the allele model (I vs. D: OR = 1.219, 95% CI 1.023-1.453, P = 0.027), homozygote model (II vs. DD: OR = 0.662, 95% CI 1.149-2.385, P = 0.007), and recessive model (DD vs. DI+II: OR = 0.707, 95% CI 1.082-1.948, P = 0.013). Stratified analysis by ethnicity indicated that the ACE I/D polymorphism was significantly associated with preterm birth in Caucasian descendants.

Our pooled data revealed that ACE I/D polymorphism is associated with the risk of preterm birth. However, larger and more rigorous studies among different populations are needed to evaluate the association with preterm birth.